Modular track assembly for a 300-unit biological sample changer



FIG. 1 is a top plan view of the inventive modular track assembly for a 300-unit biological sample changer; and

FIG. 2 is a side elevation of the modular track assembly illustrated in FIG. 1. 

The ornamental design for a modular track assembly for a 300-unit biological sample changer, substantially as shown. 